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Author Topic: agter run oil  (Read 1276 times)

Offline Bootlegger

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agter run oil
« on: April 09, 2015, 10:03:38 AM »

  How much after run oil do you put in your ball bearing engines after running them, 2-3 drops or more?

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Online Motorman

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Re: agter run oil
« Reply #1 on: April 09, 2015, 10:38:35 AM »
I mix lighter fluid (naptha) with a small amount of after run oil and start the engine for 2-3 short bursts with venturi primes. It flushes out the castor and puts after run oil everywhere. If the engine has an iron piston I put one more drop of straight oil on the closed piston and work it in.


MM
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Offline Dan McEntee

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Re: agter run oil
« Reply #2 on: April 09, 2015, 11:30:21 AM »
  The one thing the alcohol in the fuel does is draw and attract moisture. Back in my go-kart racing days, the guys that ran alcohol in their kart engines, always flushed their engines after the races by running them with a normal gas and oil mixture for several minutes to flush out all the alky. The carbs were jetted much richer, and this made it necessary to pinch off the fuel line every few seconds to keep from flooding the engine. after a few minutes, shut the fuel off, followed by the ignition a few seconds later so you knew the bearings were coated with oil. ATF makes a good after run oil also. It's thin, and clings to parts well. Motorman's method of combining with naptha and burping the engine with that mixture sounds like a good idea for the high dollar engines and would do the same as the procedure for flushing kart engines that I described.
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Offline Jim Kraft

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Re: agter run oil
« Reply #3 on: April 09, 2015, 11:55:40 AM »
George Aldrich turned me on to Rislone in the yellow quart bottle. I have had engines sit for several years with it and they are ready to go with nothing stuck. It does not seem to dry out like many others do.

When I was flying R/C pattern we use to keep a bottle of fuel with straight castor to run through the engine to coat the parts. Synthetics do not protect from nitro and alky very well. Nitro is very corrosive to steel bearings. They were usually the first things to go.
Jim Kraft

Online Brett Buck

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Re: agter run oil
« Reply #4 on: April 09, 2015, 12:54:29 PM »
  How much after run oil do you put in your ball bearing engines after running them, 2-3 drops or more?

           Thanks

  Much more, I basically fill up the venturi and the sloosh it around for a while, while it is still hot.  I use air tool oil, and it takes a long time to entirely go away once you start the engine. But to be honest, I frequently don't use anything and so far, so good.

   Brett

Offline Dan McEntee

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Re: agter run oil
« Reply #5 on: April 09, 2015, 01:09:28 PM »
George Aldrich turned me on to Rislone in the yellow quart bottle. I have had engines sit for several years with it and they are ready to go with nothing stuck. It does not seem to dry out like many others do.

When I was flying R/C pattern we use to keep a bottle of fuel with straight castor to run through the engine to coat the parts. Synthetics do not protect from nitro and alky very well. Nitro is very corrosive to steel bearings. They were usually the first things to go.
   Hey Jim!
   Rislone is one I was trying to think off. I think on the label it is described as a "top end lubricant" and is added to motor oil. It is available at most auto parts stores. It probably burns out pretty nicely on restarts also.
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  Dan McEntee
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